I have an IMAC and a Macbook Air connected to a Photosmart C5180. The Imac prints fine on the wireless network. My Air only prints garbage and spits out blank pages. It will print fine if I hook it up directly to the printer via USB. My Air prints fine wirelessly to another HP 710 and to a label maker, but not to the Photosmart. Any ideas. I've spent hours and hours on the phone with HP support and nothing.